Draw Tools
Use the draw tools in the top-left corner of the map to add custom shapes and markers:
- Polylines: Draw connected line segments to mark routes or boundaries
- Polygons: Create closed shapes to define areas of interest
- Rectangles: Quick way to define rectangular regions
- Markers: Place point markers at specific locations
Click on any drawn shape to see detailed information including coordinates, area, and bounds. You can edit or remove shapes using the edit tools in the drawing toolbar.
Note: Drawn shapes are temporary and will disappear when you refresh the page.
Map Layers
Toggle various data overlays using the layer control in the top-right corner. Available layers for the Indo-Pacific region include:
- Indo-Pacific (fill): Yellow fill showing Indo-Pacific countries
- Indo-Pacific (outline): White outline around the Indo-Pacific region
- Country markers: Diamond icons at country centroids with detailed country profiles
- Volcanoes: Holocene volcano locations, colour-coded by type (stratovolcano, shield volcano, caldera, etc.)
- Tectonic Plates: Major plate boundaries showing collision zones, subduction zones, spreading centres, and transform faults
- Cyclones: Historical tropical cyclone tracks since 2000, colour-coded by category
- Earthquakes: Significant earthquakes (M4+) since 2000, colour-coded by magnitude
- Tibetan Plateau Rivers: Major rivers originating in the Tibetan Plateau (Indus, Ganges, Brahmaputra, Mekong, Yangtze, Yellow River, etc.)
- Population Density: LandScan 2022 population distribution as a coloured raster layer
Tick or untick layers to show or hide them on the map. Multiple layers can be active simultaneously for comparative analysis.
Map Type
Switch between different basemap styles to suit your needs. Only one basemap can be active at a time:
- Simple Map (CartoDB Positron): Clean, minimalist light basemap - perfect for seeing land-based boundaries and country-level subdivisions. This map presents all geographical names in English.
- Satellite Map (Esri WorldImagery): High-resolution satellite imagery - ideal for viewing terrain, land use, and physical features
- Street Map (OpenStreetMap): Standard street map showing roads, cities, maritime borders, and human infrastructure. This map presents geographical names in the languages native to each location.
Use the radio buttons in the layer control panel (top-right) to switch between map types. The Satellite Map is set as the default view.
Search
Use the search bar at the top of the map to quickly find and navigate to locations.
When you search for a location within the Indo-Pacific region, the map will:
- Centre on the location and zoom appropriately
- Place a pulsing blue marker at the coordinates
- Display country information if the location is within an Indo-Pacific country
- Show relevant data including capital city, ruling party, opposition, and major religions
- Automatically remove the search marker after 10 seconds
The search functionality uses the Turf.js library to determine which country contains your searched location and retrieves the corresponding profile data.
Legend
The dynamic legend appears at the bottom-right of the map and explains all symbols and colours used for currently visible layers.
Key Features:
- Updates automatically based on which layers are active - keeping it relevant and uncluttered
- Shows colour coding for different feature types (e.g., volcano types, tectonic boundaries)
- Explains symbol meanings (triangles for volcanoes, circles for cyclones and earthquakes, etc.)
- Provides intensity scales (cyclone categories 1-5, earthquake magnitudes M4-7+)
- Displays gradient scales for continuous data (e.g., population density)
The legend only displays information for layers that are currently turned on, so it remains clean and easy to read. Toggle layers off to simplify the legend view.